docs: def pretty_str(self, indent=0):
          """Return a human-readable string representation of this object.
  
          Kwargs:
              indent (int): The amount of spaces to use as indentation.
          """
          indent = ' ' * indent
          if self.value is not None:
              return '{}{} {}'.format(indent, self.name, pretty_str(self.value))
          return indent + self.name